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NO971200L - Forbedringer ved en logaritmisk omformer - Google Patents

Forbedringer ved en logaritmisk omformer

Info

Publication number
NO971200L
NO971200L NO971200A NO971200A NO971200L NO 971200 L NO971200 L NO 971200L NO 971200 A NO971200 A NO 971200A NO 971200 A NO971200 A NO 971200A NO 971200 L NO971200 L NO 971200L
Authority
NO
Norway
Prior art keywords
logarithmic converter
logarithmic
converter
Prior art date
Application number
NO971200A
Other languages
English (en)
Other versions
NO971200D0 (no
Inventor
Nigel John Toll
Original Assignee
Nokia Telecommunications Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Publication of NO971200L publication Critical patent/NO971200L/no
Publication of NO971200D0 publication Critical patent/NO971200D0/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
    • H03G7/08—Volume compression or expansion in amplifiers having semiconductor devices incorporating negative feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Transmitters (AREA)
NO971200A 1995-07-14 1997-03-14 Forbedringer ved en logaritmisk omformer NO971200D0 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9514490.3A GB9514490D0 (en) 1995-07-14 1995-07-14 Improvements to a logarithmic converter
PCT/GB1996/001616 WO1997004523A1 (en) 1995-07-14 1996-07-08 Improvements to a logarithmic converter

Publications (2)

Publication Number Publication Date
NO971200L true NO971200L (no) 1997-03-14
NO971200D0 NO971200D0 (no) 1997-03-14

Family

ID=10777715

Family Applications (1)

Application Number Title Priority Date Filing Date
NO971200A NO971200D0 (no) 1995-07-14 1997-03-14 Forbedringer ved en logaritmisk omformer

Country Status (8)

Country Link
US (1) US5812008A (no)
EP (1) EP0781468A1 (no)
JP (1) JPH10505994A (no)
CN (1) CN1166247A (no)
AU (1) AU701157B2 (no)
GB (1) GB9514490D0 (no)
NO (1) NO971200D0 (no)
WO (1) WO1997004523A1 (no)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6452445B1 (en) 2000-06-15 2002-09-17 Motorola, Inc. Voltage controlled variable gain element
US6711391B1 (en) * 2000-10-10 2004-03-23 Qualcomm, Incorporated Gain linearizer for variable gain amplifiers
WO2005022194A2 (en) * 2003-08-13 2005-03-10 Lettvin Jonathan D Imaging system
US7952626B2 (en) * 2003-11-17 2011-05-31 Lettvin Jonathan D Geometric remapping with delay lines
CN101771397B (zh) * 2008-12-31 2012-10-24 南方医科大学 线性连续可调声强衰减方法及衰减器
JP5651497B2 (ja) * 2011-02-24 2015-01-14 Kddi株式会社 閾値算出装置及び閾値算出プログラム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790819A (en) * 1972-03-17 1974-02-05 Perkin Elmer Corp Log amplifier apparatus
DE2619192A1 (de) * 1976-04-30 1977-11-17 Licentia Gmbh Schaltung zur automatischen dynamik-kompression oder -expansion
US4709215A (en) * 1985-12-30 1987-11-24 Hughes Aircraft Company Traveling wave tube drive controller
FR2602937B1 (fr) * 1986-08-05 1988-11-10 Thomson Csf Dispositif de regulation de la puissance crete fournie par la chaine d'amplification d'un emetteur radioelectrique
US5004906A (en) * 1989-01-20 1991-04-02 Fuji Photo Film Co., Ltd. Logarithmic amplifier, and image read-out apparatus using the same
US5014013A (en) * 1989-10-06 1991-05-07 Hewlett-Packart Company Antilog circuit with automatic gain control
US5012140A (en) * 1990-03-19 1991-04-30 Tektronix, Inc. Logarithmic amplifier with gain control
JPH04144305A (ja) * 1990-03-20 1992-05-18 Fujitsu Ltd リニア制御可能な自動電力制御回路
US5528191A (en) * 1994-09-12 1996-06-18 Fuji Photo Film Co., Ltd. Logarithmic amplifier having improved speed response
US6590981B2 (en) * 2000-02-22 2003-07-08 Zyfer, Inc. System and method for secure cryptographic communications

Also Published As

Publication number Publication date
EP0781468A1 (en) 1997-07-02
CN1166247A (zh) 1997-11-26
JPH10505994A (ja) 1998-06-09
AU701157B2 (en) 1999-01-21
AU6364296A (en) 1997-02-18
NO971200D0 (no) 1997-03-14
WO1997004523A1 (en) 1997-02-06
US5812008A (en) 1998-09-22
GB9514490D0 (en) 1995-09-13

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